Browsing Research Articles (Botany and Zoology) by Title

Now showing items 21-40 of 335

    • The balance of trade in alien species between South Africa and the rest of Africa 

      Faulkner, Katelyn T.; Hurley, Brett P.; Robertson, Mark P.; Rouget, Mathieu; Wilson, John R. U. (AOSIS Publishing, 2017)
      Background: Alien organisms are not only introduced from one biogeographical region to another but also spread within regions. As South Africa shares land borders with six countries, multiple opportunities exist for the ...

    • Basal metabolic rate of the black-faced sheathbill (chionis minor) : intraspecific variation in a phylogenetically distinct island endemic 

      McClelland, Gregory T. W.; McKechnie, Andrew E.; Chown, Steven L. (University of Chicago Press Journals, 2016)
      Metabolic rate is a fundamental characteristic of all organisms. It covaries most significantly with activity, body mass, seasonality, and temperature. Nonetheless, substantial additional variation in metabolic rate, ...

    • Bedreig antropogeniese omgewingsveranderinge grondbiodiversiteit? 

      Reinecke, Adriaan J.; Reinecke, Sophia A. (AOSIS, 2018)
      ENGLISH ABSTRACT: Soil is a service providing asset under growing pressure but it is also home to an array of soil-dwelling species encompassing virtually all terrestrial invertebrate phyla. The impact humaninduced change ...

    • The behavior and reproductive physiology of a solitary progressive provisioning vespid wasp : evidence for a solitary-cycle origin of reproductive castes 

      Kelstrup, Hans C.; Hartfelder, Klaus; Lopes, Tiago Falcon; Wossler, Theresa C. (University of Chicago Press, 2018-01-05)
      The emergence of queens and workers from solitary antecedents mark a major evolutionary transition in the history of life. The solitary progressive provisioning wasp Synagris cornuta, a member of the subfamily Eumeninae ...

    • The behavior-physiology nexus : behavioral and physiological compensation are relied on to different extents between seasons 

      Basson, Christine H.; Clusella-Trullas, Susana (University of Chicago Press Journals, 2015)
      Environmental variability occurring at different timescales can significantly reduce performance, resulting in evolutionary fitness costs. Shifts in thermoregulatory behavior, metabolism, and water loss via phenotypic ...

    • Behavioural and chemical evidence for multiple colonisation of the Argentine ant, Linepithema humile, in the Western Cape, South Africa 

      Mothapo, Natasha P.; Wossler, Theresa C. (BioMed Central, 2011-02)
      Abstract: Background: The Argentine ant, Linepithema humile, is a widespread invasive ant species that has successfully established in nearly all continents across the globe. Argentine ants are characterised by a social ...

    • Behavioural and chemical evidence for multiple colonisation of the Argentine ant, Linepithema humile, in the Western Cape, South Africa 

      Mothapo, Natasha P.; Wossler, Theresa C. (BMC Ecology, 2011-02)
      Background: The Argentine ant, Linepithema humile, is a widespread invasive ant species that has successfully established in nearly all continents across the globe. Argentine ants are characterised by a social structure ...

    • Beyond just species : is Africa the most taxonomically diverse bird continent? 

      Lotz, Chris N.; Caddick, John A.; Forner, Monika; Cherry, Michael I. (Academy of Science of South Africa, 2013)
      We analysed avian diversity in 8 similar-sized regions of Africa, and in an additional 16 regions spread across the world; half of these 24 regions were tropical and the other half were temperate. For each region, counts ...

    • Biodegradering van sintetiese gas-tot-vloeistof-diesel, biodiesel en hul mengsels 

      Albertus, Randal M. C.; Reinecke, Adriaan J. (AOSIS Publishing, 2015-11-30)
      Volhoubare en hernubare alternatiewe vir petroleumbrandstowwe word ondersoek vanweë die toenemende aanvraag na brandstof in die vervoerbedryf. Sintetiese brandstowwe soos diesel word van natuurlike gas en steenkool ...

    • Biodiversiteit in landbougronde, volhoubare plantproduksie en die beheer van plantpatogene 

      Reinecke, A. J. (Koot); Reinecke, Sophie A. (AOSIS OpenJournals, 2010-06)
      Grond is ’n baie heterogene substraat wat ’n omgewingsmatriks daarstel wat in ruimte en oor tyd kan varieer wat betref pH, organiese koolstof, verspreiding van partikelgrootttes en voginoud. Ook chemiese, fi siese en ...

    • Biodiversity assessments : origin matters 

      Pauchard, Anibal; Meyerson, Laura A.; Bacher, Sven; Blackburn, Tim M.; Brundu, Giuseppe; Cadotte, Marc W.; Courchamp, Franck; Essl, Franz; Genovesi, Piero; Haider, Sylvia; Holmes, Nick D.; Hulme, Philip E.; Jeschke, Jonathan M.; Lockwood, Julie L.; Novoa, Ana; Nunez, Martin A.; Peltzer, Duane A.; Pysek, Petr; Richardson, David M.; Simberloff, Daniel; Smith, Kevin; Van Wilgen, Brian W.; Vila, Montserrat; Wilson, John R. U.; Winter, Marten; Zenni, Rafael D. (Public Library of Science, 2018-11-13)
      Recent global efforts in biodiversity accounting, such as those undertaken through the Convention on Biological Diversity (CBD) and Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES), ...

    • Biofuels and biodiversity in South Africa 

      Blanchard, Ryan; Richardson, David M.; O'Farrell, Patrick J.; Von Maltitz, Graham P. (ASSAF -- Academy of Science of South Africa, 2011-03)
      The South African government, as part of its efforts to mitigate the effects of the ongoing energy crisis, has proposed that biofuels should form an important part of the country's energy supply. The contribution of liquid ...

    • Biological invasions and natural colonisations are different – the need for invasion science 

      Wilson, John R. U.; Garcia-Diaz, Pablo; Cassey, Phillip; Richardson, David M.; Pysek, Petr; Blackburn, Tim M. (Pensoft, 2016)
      In a recent Discussion Paper, Hoffmann and Courchamp (2016) posed the question: are biological invasions and natural colonisations that different? This apparently simple question resonates at the core of the biological ...

    • Biological invasions in South African National Parks 

      Foxcroft, Llewellyn C.; Van Wilgen, Nicola J.; Baard, Johan A.; Cole, Nicolas S. (AOSIS Publishing, 2017)
      Objectives: A core objective in South African National Parks (SANParks) is biodiversity conservation and the maintenance of functional ecosystems, which is compromised by alien species invasions. The 2016 Alien and Invasive ...

    • Biological survey of the Prince Edward Islands, December 2008 

      Cooper, J.; Bester, M. N.; Chown, S. L.; Crawford, R. J. M.; Daly, R.; Heyns, E.; Lamont, T.; Ryan, P. G.; Shaw, J. D. (Academy of Science of South Africa, 2009)
      A biological survey of the Prince Edward Islands took place In December 2008. The survey repeated an earlier survey of the populations of surface-nesting seabirds on both islands and of fur seals (Arctocephalus spp.) and ...

    • Breaking tradition with scientific learning 

      Wossler, Theresa (AOSIS OpenJournals, 2010-02)
      Pathways to scientific teaching is a compilation of previously published, two-paged articles in Frontiers in ecology and the environment, a publication of the Ecological Society of America. In 2004, this publication instituted ...

    • C.G.S. de Villiers : wetenskaplike en kultuurmens 

      De Kock, J. M.; De Kock, C.; De Kock, J. C. (AOSIS OpenJournals, 2001)
      Professor C.G.S. de Villiers wat by almal bekend gestaan het as “Dr. Con”, was vir sewe en dertig jaar professor in soölogie aan die Universiteit van Stellenbosch. Hy was ’n besonderse persoon en het ’n vormende invloed ...

    • Cascade effects of crop species richness on the diversity of pest insects and their natural enemies 

      Shi, PeiJian; Hui, Cang; Men, Xing Yuan; Zhao, Zu Hua; Ouyang, Fang; Ge, Feng; Jin, XianShi; Cao, HaiFeng; Li, B. Larry (Springer, 2014)
      Understanding how plant species richness influences the diversity of herbivorous and predatory/parasitic arthropods is central to community ecology. We explore the effects of crop species richness on the diversity of pest ...

    • The centenary of Union 

      Cherry, Micheal (AOSIS OpenJournals, 2010-06)
      It would not be right for this journal to ignore the fact that on 31 May 1910, a century ago, the Union of South Africa came into being. That date saw the birth of the country in which we live today. Before then there ...

    • Challenges and opportunities for monitoring wild Nile crocodiles with scute mark-recapture photography 

      Coetzee, Bernard W. T.; Ferreira, Sam M.; Maciejewski, Kristine (AOSIS, 2018-07-19)
      ENGLISH ABSTRACT: The global conservation status of Nile crocodiles (Crocodylus niloticus) was last assessed in 1996. The species presents particular difficulty in monitoring because it can be cryptic, require expertise ...